On 10/01/2018 at 03:55, xxxxxxxx wrote:
Hi more4d, thanks for writing us.
With reference to your request, assuming you'r just interested in the object's center it's enough to retrieve the object's bounding box position via BaseObject::GetMp() and simply transform it using BaseView::WS(). This way you can in a few lines get the position of the object's center in screen space.
# get the active BaseDraw
bd = doc.GetActiveBaseDraw()
# check both active BaseDraw and active BaseObject
if bd is None:
if op is None:
# retrieve object's bounding-box coordinates in world space
opBBoxWorld = op.GetMg() * op.GetMp()
# transform from world-space to screen-space using BaseView::WS()
opBBoxScreen = bd.WS(opBBoxWorld)
# print results
print "Object's center in world-space: ", opBBoxWorld
print "Object's center in screen-space: (x:", opBBoxScreen.x, ", y:", opBBoxScreen.y, ")"
In case instead you need to refine your investigation to all the vertexes of the object, just loop over them and transform in screen-space using the same technique described above.
For the sake of completeness, it could worth having a look here where details are explained.